Computer networks Connection oriented client

Computer Network Lab Manual / Computer networks Connection oriented client

Program Name

Write a C Program for Computer networks Connection oriented client.

Theory

1. Connection-oriented service transfers packets between are send by source and received
by the destination nodes. In Connection-oriented service the packets are routed using a path 
called as virtual circuit. It can transfer the data packets between senders to the receiver 
by creating any connection.

2. Standard Port Numbers: 7-ECHO, 13-DAYTIME, 19-CHARACTER GENERATION

3. 10.2.0.7= It is current server IP.

Program Code


//Connection-oriented client for standard ports (7-ECHO)

#include<stdio.h>
#include<netinet/in.h>
#include<sys/socket.h>
int main()
{
struct sockaddr_in serv;
char msg1[50], msg2[50];
int sockfd=socket(AF_INET, SOCK_STREAM,0);

serv.sin_family=AF_INET;
serv.sin_addr.s_addr=inet_addr("10.2.0.7");
serv.sin_port=htons(7);

connect(sockfd,(struct sockaddr*)&serv,sizeof(serv));

printf("Enter a String");
scanf("%s",msg1);
  
send(sockfd, msg1, sizeof(msg1),0);
recv(sockfd, msg2, sizeof(msg2),0);

printf("Msg received from server: %s ",msg2);
close(sockfd);
return 0;
}

Input and Output:

Standard port numbers: 7-ECHO
Input: Enter a String: Hai
Output: Msg received from server: Hai


Standard port numbers: 13-DAYTIME
Input: Enter a String: Hai
Output: Msg received from server is: 23 NOV 2021 13:55:20 IST


Standard port Numbers: 19-CHARACTER GENERATION
Input: Enter a String: Hai
Output: Msg received from server is: !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRhai 
10.2.0.7= It is current server IP

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